1篇
您的检索式：作者名="Keyvan Aghaei"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Potato Responds to Salt Stress by Increased Activity of Antioxidant Enzymes显示文摘To understand the response of potato to salt stress, antioxidant enzyme activities and ion content were analyzed for a sensitive and a tolerant cultivar. Nodal cuttings of the tolerant cultivar, Kennebec, and the sensitive cultivar, Concord, were exposed to media without or with 30, 60, 90 or 120 mmol/L NaCl for 4 weeks. On exposure to NaCl, the length and fresh and dry weight of both shoots and roots of Concord showed greater decrease than those of Kennebec. The decrease in shoot growth was more severe than that of the root for both cultivars. The K+ content of shoots and roots of both cultivars was reduced in a dose-dependent manner by exposure to NaCl; the Na+ content increased. Activities of ascorbate peroxidase, catalase and glutathione reductase were increased in NaCl-exposed shoots of Kennebec; the corresponding activities in NaCl-exposed shoots of Concord were decreased. Roots of both cultivars showed similar changes in the activities of these enzymes on exposure to NaCl. These studies established that enzyme activities in Concord shoots are inversely related to the NaCl concentration, whereas those in Kennebec do not show a dose dependency, which is also the case for the roots of both cultivars. Our findings suggest that an increase in activity of antioxidant enzymes, such as ascorbate peroxidase, catalase and glutathione reductase, can contribute to salt tolerance in Kennebec, a salt resistant cultivar of potato. | Keyvan Aghaei Ali Akber Ehsanpour Setsuko Komatsu | 2009 | Journal of Integrative Plant Biology2009，51，12： | 10 |
您所在的机构暂未开通此部分的功能，请联系管理员